PDF malware analysis — malicious · b2973de7a90c4d61

MALICIOUS

PDF

67.3 KB Created: 2020-11-11 18:16:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14

MD5: 7e4161523aa0c3446ed0965758681927 SHA-1: 1f19280e74bbe19877fd93ff0ee9d3f4adab1d58 SHA-256: b2973de7a90c4d61d3475ca341cc6e95df984a62c01e5a68d5b31d1ba19f11fd

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafficel.ru', which is likely part of a phishing or redirection scheme. The document body, though heavily obfuscated, appears to contain text related to unit conversions, potentially as a lure.

Machine Learning

Nyx PDF Classifier malicious score 0.9996

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
Embedded URL info EMBEDDED_URL

One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
URL https://trafficel.ru/123?utm_term=1+gallon+to+ml+philippines PDF link annotation
- https://cdn-cms.f-static.net/uploads/4483873/normal_5faba408dc94d.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4412896/normal_5fa411be54ef9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4376629/normal_5f9cd7986ff77.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4370560/normal_5f8a4029840c5.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4446379/normal_5fa704ae79dc7.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4410443/normal_5f9c840ec61d8.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4416796/normal_5f9dfb7eafd76.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/pezufatexo/18433183777.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/de3259a5-3dd2-46fc-8313-e2955fa8ec8e/pathfinder_2_character_sheet_printable.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/bf36795d-11a3-4154-9645-d7b926bcbed6/inside_passage_map.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000c5b6.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xC5B6	5092 bytes
SHA-256: `ada4cba6ba9577fb65f4fbc93f6d8e139b9590150b1c35eb642f417225c71c12`
`font_01_sfnt_off0000d6e9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD6E9	12392 bytes
SHA-256: `3eff2aff8a778879e8dc516756564cc0df3198acc3ac305666dffb3ae067bceb`

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